"The Galaxy" is our home galaxy, the Milky Way, though it is referred to exclusively as "the Galaxy" in the series. Apart from a very brief moment during the first radio series, when the main characters were transported outside the galactic plane into a battle with Haggunenons, and a moment when one of Arthur's careless remarks is sent inadvertently through a wormhole into "a distant galaxy", the Galaxy provides the setting for the entire series. It is home to thousands of sentient races, some of whom have achieved interstellar capability, creating a vast network of trade, military and political links. To the technologically advanced inhabitants of the Galaxy, a small, insignificant world such as Earth is considered invariably primitive and backward. The Galaxy appears, at least nominally, to be a single state, with a unified government "run" by an appointed President. Its immensely powerful and monumentally callous civil service is run out of the Megabrantis Cluster, mainly by the Vogons.

A "former Galactic Empire" is mentioned in several adaptations of the series. By the time set in the Hitchhiker's series, the government of the Galaxy is referred to as the "Imperial Galactic Government", though it is further explained that the term 'Imperial' is now something of an anachronism. In the television adaptation of the series, the name Imperatala Galacticon is used in one graphic as an alternative name for the previous Galactic Empire.

In the books and radio series, the President of the Galaxy is figurehead who is "elected by that assembly". In the movie, however, the President of the Galaxy is a two-horse popular vote between Zaphod Beeblebrox and Humma Kavula.

Thus the president's purpose is not to wield power but to draw attention away from it. Almost nobody realizes that the President and the Government have virtually no power at all. Of these, only six people know whence ultimate political power is wielded. "Most of the others secretly believe that the ultimate decision-making process is handled by a computer. They couldn't be more wrong."

The current President of the Galaxy when the series begins is Zaphod Beeblebrox. Zaphod, along with Yooden Vranx, Zaphod's great-granddad, Roosta and Zarniwoop, found out how little power the president wields, and set out on a complex journey to find the real ruler of both the Imperial Galactic Government and in fact the entire universe. Their mission, which ends in the novel The Restaurant at the End of the Universe, culminates in the discovery that power is actually wielded more or less entirely by a man in a shack. He expresses no interest in actually ruling the Universe, instead choosing to enjoy the company of his pet cat (known as "the Lord") and being fascinated with simple things such as a pencil and paper. This behaviour, so reasoned the old imperial government, allowed him to not be distracted by desire or eagerness and made him a perfect ruler. Zarniwoop is somewhat frustrated upon discovering the truth.

The Outer Eastern Rim of the Galaxy is where the Guide has supplanted the Encyclopedia Galactica among its more relaxed civilisations, and where in the novel Mostly Harmless Arthur Dent heads for where "wisdom and truth were to be found" and goes to Hawalius.

Galactic Sector ZZ9 Plural Z Alpha is a galactic sector containing Earth, Barnard's Star, and probably other nearby systems. The "Plural" designation may indicate probability problems; after Fenchurch disappeared during a hyperspace jump, it was pointed out to Arthur Dent that the small print advised against hyperspace travel for those born in Plural sectors. This is apparently common knowledge throughout the rest of the galaxy.

Max Quordlepleen claims that the only thing left after the end of the Universe will be the sweets-trolley and a fine selection of Aldebaran liqueurs. It is described as "great, OK" in a song protesting against teleportation, and has fine wines that are on the Heart of Gold.

Algol is the home of the Algolian Suntiger, the tooth of which is one of the ingredients of the Pan Galactic Gargle Blaster. Before being placed into the Total Perspective Vortex, Zaphod Beeblebrox wished for Algolian Claret, an alcoholic drink presumably created by the gray humanoid species inhabiting the planet. Despite Zaphod's apparent affinity for this drink, Algolian cuisine is equally noted for its unpleasantness. The Algolian Zylbatburger is one such case; as related by Ford Prefect, "They're a kind of meatburger made from the most unpleasant parts of a creature well-known for its total lack of any pleasant parts." It is briefly mentioned as pretty neat in a song protesting against teleportation.

Apart from being the closest star-system to Earth's, (4.1 light-years northwest of earth) Alpha Centauri is home to both a local planning department office of the Galactic Hyperspace Planning Council and a race of small furry creatures (who, during the times of the Galactic Empire, "were real small furry creatures"). Its main spaceport, Port Brasta, has a massive duty-free shopping mall, the motto of which is, "be like the twenty-second elephant with heated value in space – bark!" This slogan contains an ingenious pun in Centaurian that the natives find hilarious.

Alpha Proxima is the smallest (and closest to Earth) member of the Alpha Centauri system. The first novel points out that it is four light years from Earth's solar system to Alpha Proxima, whilst Damogran is five hundred thousand light years away.

The Altairian dollar is one of three freely convertible currencies in the galaxy, though by the time of the novels it had apparently recently collapsed. The Hitchhiker's Guide to the Galaxy advertises itself as the best resource for those who wish "to see the galaxy for less than thirty Altairian dollars a day". According to the Hitchhiker's Guide TV series, one Altairian "long way" is equal to 37 Earth miles.

Arcturus is home to the great Arcturan megafreighters, automated cargo-carriers that transport vast quantities of goods between star-systems. So large that they eclipse a planet's sun when in orbit, they are supposedly impregnable, though Zaphod Beeblebrox somehow managed it as a child. Former galactic president Yooden Vranx was captain of the megafreighter infiltrated by Zaphod and Ford. Arcturus is also home to a staggering array of oversized and often deadly megafauna, from the Arcturan Megaleech to the Arcturan Megavoidwhale, the Arcturan megagnat to the Arcturan megaelephant and megapuppy, as well as the megacamel, well known by the turn of phrase "one's soul moves at the speed of an Arcturan megacamel", presumably the reason for distilling Arcturan Mega-gin.

Barnard's Star, a red dwarf star six light years from Earth, is an interstellar transit-stop used by the Vogon constructor fleet after demolishing Earth, where the crews' planet-leave is cancelled after Prostetnic Vogon Jeltz has an unhappy love-affair. It is also where Ford Prefect and Arthur Dent are thrown off the Vogon spaceship into interstellar space and rescued by the Heart of Gold.

The Red supergiantstarBetelgeuse (pronounced "Beetle-juice") is the home system of Ford Prefect and Zaphod Beeblebrox. A song protesting against teleportation claims that "Betelgeuse's pretty girls will knock you off your feet", and that, "they'll do anything you like, real fast and then real slow."

Betelgeuse Seven was the birthplace of Ford Prefect's father, who was the only survivor of the Great Collapsing Hrung Disaster of galactic sidereal year 03758, which wiped out the old Praxibetel communities on the planet. The whole episode is shrouded in deep mystery; in fact no one ever knew what a Hrung was nor why it should choose to collapse on Betelgeuse Seven in particular.

New Betel is mentioned as a location somewhere in the Betelgeuse system. Café Lou is a dive bar in Gretchen Town, New Betel. There are rentable rooms on the floors above the bar, where Ford Prefect spent many nights talking and drinking with Hotblack Desiato, who was often writing songs for his ajuitar in the neighbouring room.

In the original radio series, the Frogstar system does not exist and the Total Perspective Vortex is said to be located on "The Frogstar". It is described in little detail, save that it is "very unpopular", and has been struck by several bombs. A travel brochure recommended the Frogstar for "sun, sand and suffering". The books later expanded the Frogstar into a full system with three known habitable planets.

Frogstar World A is the first planet of the Frogstar system and the home of the Frogstar fighters which take Zaphod Beeblebrox to Frogstar World B. Frogstar World A is described as an altogether more congenial place than Frogstar World B.

Frogstar World B is said to be "the most totally evil place in the galaxy". It is somewhat like the books' equivalent of Brontitall in the radio show; although there are differences between the two, they share some attributes. Although there is no statue of Arthur on Frogstar B, the bird people came about the same way. There is no archaeologist called Lintilla in the part of the books that concerns itself with Frogstar B; however, the spaceport with the massively delayed spaceship is there. Frogstar B was thrown into poverty through an event termed the Shoe Event Horizon. Many years ago, Frogstar World B was "a thriving, happy planet – people, cities, shops, a normal world." However, there were slightly too many shoe-shops on the high streets of the planet, and the number of shoe-shops was steadily increasing. The more shoe-shops there were, the more the shops had to make. The more they had to make, the worse and more unwearable the shoes became. And the worse and more unwearable the shoes became, the more the people had to buy, and the more money the shops made until it became economically impossible to build anything other than shoe-shops. The result was collapse, ruin, and famine. Most of the population died out, but a select few with the right kind of genetic instability mutated into a bird-like species and cursed the ground, refusing to set foot on it ever again. Frogstar B is the home of the Total Perspective Vortex, a machine that effectively annihilates one's soul by showing one in an instant the whole infinity of creation and oneself in relation to it, and in the continuity of the books, Frogstar World B is the future site of Milliways, the Restaurant at the End of the Universe. In the radio series this role is instead given to Magrathea.

Frogstar World C is the home planet of Gargravarr, the guardian of the Total Perspective Vortex. It is said to be a beautiful place with wonderful fishing-opportunities. Its native intelligent life apparently exists in two separate forms, minds and bodies, which cohabit in a similar fashion to married couples. The bodies have not been described physically in the series, save for the fact that they are said to be on their "last elbows" rather than "last legs".

The political hub of the Galaxy, which all the Vogons migrated to from Vogsphere, where they "formed the immensely powerful backbone of the Galactic Civil Service." The philosophers who had previously managed the galaxy were relegated to licking stamps. In the 2005 movie The Hitchhiker's Guide to the Galaxy, the aforementioned Vogon migration has not happened.

Brantisvogan is a planet where Zaphod Beeblebox holds a bank account (in the novel The Hitchhiker's Guide to the Galaxy), and where getting the Civil Service to acknowledge a change-of-address card is listed by the guide as "Recreational Impossibilities" (in the novel Life, the Universe and Everything).

The Brantisvogan Megalycee (Unidate 911VCK168) (in Fit the Eleventh of the radio series) teaches the Middle School Life The Universe and Everything syllabus, where the Computeach imparts details of the sad tale of the Shoe Event Horizon.

Lintilla was cloned for a Brantisvogan escort agency (Fit the Eleventh of the radio series).

Sesefras Magna is in orbit around Zondostina, in the Pleiades. The space near the planet is home to the space station Port Sesefron, a docking-place for Xaxisian battleships and other spacecraft visiting the star-system. Ford Prefect takes an Escape-O-Buggy from the sales ship he left in orbit around Epun to Port Sesefron in the novel So Long, and Thanks for All the Fish.

The Sirius Tau Star system is home to the Sirius Cybernetics Corporation, in the first novel, in which the anti-teleportationists' poem recommends that you "see Tau before you're dead". A party of Young Conservatives from Sirius B visit Milliways in the second novel. They are all, appropriately, dogs.

Eadrax, a planet in the Sirius Tau system, is home to the main administrative hub of the Sirius Cybernetics Corporation Complaints Division, which now covers the major landmasses of three medium-sized planets. Eadrax is home to the Complaints Division spaceport, and originally home to the Sirius Cybernetics Corporation Complaints Division motto, "SHARE AND ENJOY", which stood in 3-mile-high letters above the main office block, before it fell through said office block and into the ground. Only the top halves of the letters are now visible and appear to read, in the local language, "Go Stick Your Head in a Pig".

Sqornshellous is a six-star system, possessing a number of planets all sustaining curiously soft-furnishing-based species.

Sqornshellous Beta is two planets in from Sqornshellous Zeta, and is inhabited by square cushions who enjoy being rubbed up against, especially with people's shoulders. Unlike Sqornshellous Zeta, it has desert terrain rather than swamps (mentioned in the novel Life, the Universe and Everything).

Sqornshellous Delta is famed for Thor's record for spontaneous flaybooz detonation whilst in orbit (see the novel And Another Thing...).

Dimly illuminated and very swamp-intensive, Sqornshellous Zeta is the source of almost all the Galaxy's mattresses. Said mattresses (all of whom are called Zem) spend most of their time flolloping, globbering, volluing, vooning and willomying, all of which are very specific activities that are only ever performed by sentient mattresses – in fact, it is only sentient mattresses that *can* perform them. These activities (or, more specifically, the *naming* of these activities) make the planet a favourite destination of etymologists (see also Sqornshellous Swamptalk and The Ultra-Complete Maximegalon Dictionary). The Zems themselves remain a foot tall, until they are caught and very thoroughly killed, then freeze-dried, cleaned, and made into mattress-sized corpses (which are promptly used as mattresses). It is a process which, strangely enough, they don't seem to mind at all. Very few mattresses have ever come back to life again (from the novel The Hitchhiker's Guide to the Galaxy and the novel Life, the Universe and Everything).

Marvin the Paranoid Android was invited to Sqornshellous Zeta to give a speech marking the opening of a giant new bridge intended to revive the economy of the Sqornshellous System, said bridge also costing the total sum of the economy of the entire planet to construct. After delivering a characteristically pessimistic speech, Marvin was plugged into the bridge's opening circuits and the whole cyberstructure instantly folded itself up and collapsed from sheer misery, possibly after being directly exposed to Marvin's chronically depressed view of the Universe. Marvin was left stranded in the swamp with only the mattresses to talk to, until warrior robots from Krikkit stole his leg, and then the rest of him.

"Yes, I've transmitted a new entry out to the editor. He had to trim it a bit, but it's still an improvement."

Earth is "an utterly insignificant little blue-green planet far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the galaxy". The sapient life-forms on Earth are, in descending order of intelligence, mice, dolphins and humans, the lattermost of whom may or may not be descended from a race of Golgafrinchan telephone-sanitisers, hairdressers, management consultants, and documentary film producers." These Golgafrinchans arrived in a space ark which crashed into the planet circa 2 mya, promptly christening their new home "Fintlewoodlewix" (though obviously the name didn't stick).

Earth is widely regarded with derision and scorn by most sentient beings in the galaxy. That most other races have shunned Earth is in part due to its primitive technological state and also for its invention of the game of cricket, an unfortunate product of racial memory that appears to make light of the horrendously genocidal Krikkit Wars, which right-thinking galactic citizens find immensely distasteful. Before the arrival of Ford Prefect and the Vogons, Earth's main form of extraterrestrial contact was with "teasers": bored rich kids who cruise the galaxy looking for planets yet to make interstellar contact, find some isolated spot, land in front of some credulous soul they know no one will ever believe, strut up and down in front of them with "silly antennas on their head" and make "beep-beep" noises at them. Ford regards this practice as "rather childish, really".

Although often mistaken for a planet, Earth is in reality the greatest supercomputer of all time, designed by the second-greatest supercomputer of all time, Deep Thought, to calculate the Ultimate Question of Life, The Universe and Everything (to which the answer is 42). It was built by the then-thriving custom planet industry of Magrathea to run a ten-million-year program in which organic life would play a major role. Slartibartfast, a Magrathean designer, was involved in the project and signed his name among the fjords of Norway (an area that won him an award).

Earth is also home to Arthur Dent and Trillian. Earth is located in Galactic Sector ZZ9 Plural Z Alpha.

The Hitchhiker's Guide to the Galaxy originally described Earth as "harmless" (the entry is short because of the limited amount of space the Guide possessed, what with the sheer size and content of the galaxy itself). After lengthy research over fifteen years (intended only to be a week), Ford Prefect expanded the entry immensely, though his editor trimmed the new description to "mostly harmless". The original entry authored by Ford was later reinstated in So Long, and Thanks for All the Fish.

Five minutes before the program was to finish running, Earth was destroyed by the Vogons, allegedly to make way for a hyperspace bypass but in fact to prevent the Ultimate Question being discovered, as it was seen as a threat to the psychiatric industry. It was subsequently replaced by an exact duplicate by the dolphin "Save the Humans" movement, as shown in So Long, And Thanks For All the Fish (the dolphins having escaped by unspecified means shortly before the demolition). The dolphins themselves, however, elected not to return. Some time later, the Earth was once again destroyed by the Guide Mark II, acting through the amnesiac Grebulons.

In the film version, Earth was also destroyed to clear a way for a new hyperspace bypass. However, it was mistakenly authorised by Zaphod, who thought the contract was a request for an autograph. A new Earth was then made and put into place by Slartibartfast, and all the humans and animals, including the dolphins, return to Earth as if nothing ever happened.

Cottington is, or rather was, an obscure and unsung little country hamlet in the West Country of England which was, for the last three years prior to the demolition of Earth, Arthur Dent's home. If the Vogons had not shown up, Cottington was scheduled to be transformed into a service station for the very "splendid and worthwhile" new Bevingford bypass, with the village being transformed into the Cottington Service Station, despite the unpopularity of this project with the locals. Arthur returned to his home on the reconstituted Earth in So Long, and Thanks For All the Fish.

The village has a small hotel with a saloon bar named the Horse and Groom.

In So Long and Thanks For All the Fish, Ford Prefect's re-introduced article on Earth in the Hitchhiker's Guide advises any alien visitor to New York to get a job as a cab driver, as it does not require a human appearance, knowledge of the English language or indeed of the local laws of physics. It won't matter where you land your ship, as no one will notice. The East River is particularly recommended for many amphibious lifeforms from the Swulling, Noxios or Nausalia systems, as its pollution is richer in nutrients than any known synthetic alternative.

In Mostly Harmless, Tricia McMillan, an alternative universe version of Trillian, initially resides in New York.

At a party at a flat in Islington in north London (phone number 2079460347, a Croydon area number in south London in real life) about six months before the destruction of the Earth, Arthur totally failed to hit it off with Tricia McMillan (Trillian), who instead went off with "Phil", a space alien who turned out to be Zaphod Beeblebrox.

Islington also was the location of the cave in which Arthur lived during Earth's prehistoric period, as described in the third novel. Two million years later, exactly the same spot was the location of Fenchurch's home as described in the fourth novel.

Islington is a former home of Douglas Adams, in which he wrote much of the first novel, and drew inspiration from his surroundings; in particular a real estate agent called "Hotblack Desiato", a name he took for a rock musician in the series.[3]

A particular love of its creator, the Magrathean Slartibartfast, who eulogises its "lovely crinkly edges". For a time in the distant past, fjords were fashionable and he won an award for their design. During their trek away from the site of Golgafrinchan ark crash, Ford and Arthur see Slartibartfast's likeness and signature carved into an ice wall in one of the fjords, making them realise that they are on prehistoric Earth.

A planet in Earth's solar system beyond the orbit of Pluto. Rupert was named Persephone, but nicknamed Rupert after an astronomer's pet parrot. It was eventually settled by the Grebulons.

In 2005, a large body fitting Rupert's description was discovered beyond Pluto (which was considered a planet then, as opposed to a dwarf planet now). In a poll of the public conducted by New Scientist magazine to search out potential names for the object, "Rupert" ranked #5, and "Persephone" was the top choice.[4] The object was named Eris and designated a dwarf planet by the International Astronomical Union on 13 September 2006.[5]

A silver trophy awarded at the Annual Ursa Minor Alpha Recreational Illusions Institute Awards Ceremony was later stolen and used as part of the key needed to unlock the Slo-Time envelope that surrounded the planet Krikkit.

The rich and sunny planet Ursa Minor Beta has the quite peculiar property that most of its surface consists of subtropic coastline. Even more peculiar, on this world it's always Saturday afternoon, just right before the beach bars close. Light City, the only city on Ursa Minor Beta, which can only be reached by plane, is the very place where the editorial offices of The Hitchhiker's Guide to the Galaxy reside. A further anomaly in Light City is that the Lalamatine district, just behind the beach, is the only place on the planet not to enjoy a perpetual Saturday afternoon. Instead it is always early evening, with cooling breezes – this is where the nightclubs are located.

The novel The Restaurant at the End of the Universe states that "Ursa Minor Beta is, some say, one of the most appalling places in the known Universe."
"Although it is excruciatingly rich, horrifyingly sunny and more full of wonderfully exciting people than a pomegranate is of pips, it can hardly be insignificant that when a recent edition of Playbeing Magazine headlined an article with the words, 'When you are tired of Ursa Minor Beta you are tired of life', the suicide-rate there quadrupled overnight."

Megadodo Publications are the original publishers of The Hitchhiker's Guide to the Galaxy. The company's headquarters were located on Ursa Minor Beta, in a pair of 30-storey office buildings connected partway up their height by a walkway, so that the entire structure resembled a giant letter H. The relocation of the offices to a resort planet caused the company to lose much of its credibility among its customer base. One of the buildings was uprooted by a squadron of Frogstar fighters and taken to the Frogstar, in an attempt to capture and discipline rogue Galactic President Zaphod Beeblebrox. The Megadodo lobby is always filled with grubby-looking hitchhikers wanting to complain about the Guide's many inaccuracies.

The president of Megadodo Publications is Zarniwoop, who is always too cool to see visitors. Megadodo was criticized by its customers for setting up an artificial universe in order to allow its editors and contributors to collect book information without leaving their offices. Notably secretive (or destructive) about their financial and historical records, the entire company was later (in the novel Mostly Harmless) bought out by Infinidim Enterprises, which stopped selling the Guide to hitchhikers entirely and eliminated all of what Megadodo had once stood for, much to the disapproval of employee Ford Prefect. The takeover was, in fact, part of a new plan by the Vogons to destroy Earth in all possible parallel dimensions – a plan that eventually succeeded.

A star in Galactic Sector QQ7 Active J Gamma, beyond what used to be known as the Limitless Lightfields of Flanux, until the Grey Binding Fiefdoms of Saxaquine were discovered lying beyond them. It is orbited by the planet Preliumtarn, on which is the land of Sevorbeupstry, in which is the Great Red Plain of Rars, bounded on the South side by the Quentulus Quazgar Mountains. According to the dying words of Prak, written here in 30-foot-high (9.1 m) letters of fire, is God's Final Message to His Creation. In the novel So Long, and Thanks for All the Fish, Arthur and Fenchurch journey here, and do indeed see the Message, and also discover there Marvin the Paranoid Android, who by that point is thirty-seven times older than the Universe itself.

Argabuthon is a technologically advanced planet whose perspex Sceptre of Justice turned out to be part of the key to the Wikkit Gate. It is also the home of Prak, a man placed into solitary confinement after an overdose of truth-drug caused him to tell the Truth in its absolute and final form, causing anyone to hear it to go insane. The planet's Arglebard Forest provided the wood to build the Argabuthon Chamber of Law. In the novel Life, the Universe and Everything, the crew of the Heart of Gold visit Prak in an unsuccessful attempt to learn the Ultimate Question.

An Earthlike planet on which Arthur Dent lived for a short time during the events of the novel Mostly Harmless, Bartledan is inhabited by Bartledanians, a race that appears human but only physically. The major difference, aside from not needing to breathe, is a near-total state of apathy, expressing no emotion whatsoever. They are so uncaring that if a source of drinking-water is not available, they will simply accept it and forget the drink altogether, even if it results in their eventual death from extreme thirst. Otherwise, Bartledanians generally occupy their time by playing netball (with no particular intent to actually win) and writing literature that, rather than following conventional narrative structures, simply stop at 100,000 words.

Brontitall is a planet with a warm, rich atmosphere and no mountains. It is populated by highly evolved bird people who live in the right ear of a 15-mile-high marble statue of Arthur Dent, built as a reminder of the moment when Arthur (due to a freak occurrence) appeared in the sky over the city arguing with a Nutrimatic Drink Dispenser, inspiring the people of the planet to get rid of all robots.

Nearby, a derelict spaceport contains a number of crumbling old spaceships, but one of which is still on power, "delayed" for over 900 years due to the non-arrival of its complement of lemon-soaked paper napkins.

Originally the bird people were ground-dwellers, but gradually the planet was taken over by the shoe-shops of the Dolmansaxlil Shoe Corporation, apparently thanks to the shoe-shop-intensifier ray deployed by the corporation in order to keep the populace buying more and more poorly made and ill-fitting shoes. The guide later reveals that the shoe-shop-intensifier ray "is, in actuality, a phony, designed to make Dolmansaxlil executives feel they are doing something excitingly aggressive, when in fact all they need to do is wait". Rather than falling to the predation of the corporation, the planet had instead succumbed to the natural state of decay known as the Shoe Event Horizon.

The foundation of the Shoe Event Horizon theory is that when depressed, people tend to look down, and when they look down, they see their shoes. To cheer themselves up, they might buy themselves a new pair. Thus, in a generally depressed society, demand for shoes will rise.

In the critical condition, demand for shoes rises faster than the capacity to make good-quality footwear. As shoe-quality decreases, the demand increases further because shoes wear out faster and need to be replaced more often; as the demand for shoes increases, cheap mass production causes shoe-quality to drop even more. What results is a spiral of increasing shoe-demand and decreasing shoe-quality. Eventually, this destabilizes the economy to the point where it is "no longer economically viable to build anything other than shoe-shops", and planetary society collapses.

Adams had gone to London's Oxford Street where, quoting him, "You can't throw a brick without breaking a shoe-shop window". Despite every shop stocking thousands of shoes, none had a pair which was the right size, price, or colour, or which was comfortable, durable or stylish without being outrageous.

A small, remote, uninteresting planet whose surface comprises a number of small, uninteresting islands surrounded by ocean. Two of these islands are coincidentally named "Easter Island" and "France". The starship Heart of Gold was built on this planet and promptly stolen by Zaphod Beeblebrox at its launching.

The background shot used in the 2005 movie The Hitchhiker's Guide to the Galaxy contains a view of Church Rock, near Stackpole in Pembrokeshire in west Wales, UK. This location is later used (in unaltered form) during the flyby sequence of Slartibartfast and Arthur in the planet-builder's factory.

Golgafrincham is a red semi-desert planet that is home of the Great Circling Poets of Arium and a species of particularly inspiring lichen. Its people decided it was time to rid themselves of an entire useless third of their population, and so the descendants of the Circling Poets concocted a story that their planet would shortly be destroyed in a great catastrophe. (It was apparently under threat from a "mutant star goat".) The useless third of the population (consisting of hairdressers, tired TVproducers*, insurancesalesmen, personnel officers, security guards, management consultants, telephone sanitisers and the like) were packed into the B-Ark, one of three purported giant Ark spaceships, and told that everyone else would follow shortly in the other two. The other two thirds of the population, of course, did not follow and "led full, rich and happy lives until they were all suddenly wiped out by a virulent disease contracted from a dirty telephone".

The B-Ark was programmed to crash-land on a suitably remote planet on one of the outer spiral arms of the galaxy, which happened to be Earth, and the Golgafrinchan rejects gradually mingled with and usurped the native cavemen**, becoming the ancestors of humanity and thereby altering and distorting the course of the great experiment to find the question for the Answer to Life, the Universe, and Everything, or so Ford Prefect presumes. A lot of them didn't make it through the winter three years prior to Arthur Dent's reunion with Ford Prefect, and the few who remained in the spring said they needed a holiday and set out on a raft. History says they must have survived.

People from Golgafrincham are called Golgafrinchans. In some versions of the novel The Restaurant at the End of the Universe, the planet is also referred to as "Golgafrinchan", but this usage is less common and is thought to be an error of typography.

* Tired was a misread of "Tri-D", but was left as is because D.A. thought there should be some tired TV producers too.[6]

** Arthur and the Golgafrinchans reflexively call the primitive Earth primates "cavemen", despite Ford pointing out that they didn't actually live in caves as such, to which one Golgafrinchan wittily replies "Perhaps they're having their caves redecorated".

The city of Vassilian on the planet of Golgafrincham is where the five princes journey of the traditional long poems started from, in the second novel.

Hawalius was home to oracles, seers, soothsayers and take-away pizza shops, but was being Plutoed by time-travelling journalists, taking away the planet's trade. Arthur Dent travelled there and met the smelly Old Woman in the Cave (with a solar-powered photocopier) and the Old Man on the Poles in the novel Mostly Harmless.

Jaglan Beta is, evidently, the second planet in a star system near the Axel Nebula. The entry on the usefulness of towels in the Hitchhiker's Guide notes that Jaglan Beta's moons are quite cold, and that a towel is useful for wrapping up with while on them.

In the parking lot at Milliways, Ford Prefect briefly recounts a tale about being passed by a Lazlar Lyricon custom spaceship that subsequently crashed into the third moon of Jaglan Beta, observing that the ship looked like a fish and moved like a fish, but steered like a cow.

Kakrafoon is an arid world which has a reddish surface similar to that of Mars. Unlike Mars, Kakrafoon has a sentient species known as the Belcerebons, who are a very accomplished and above all quiet race. Because this quietness was deemed antisocial by the rest of the galaxy, the Belcerebons were sentenced by Galactic Tribunal to be telepathic. The only way for them to avoid mentally broadcasting every thought that crossed their minds was to make incessant chattering small-talk about mundane subjects like the weather. Another method, it turns out, was to play host to a Disaster Arearock concert.

In fact, one such concert, following Hotblack Desiato's visit to Milliways, was so apocalyptically loud that not only did it permanently disperse the Belcerebons' telepathy, but the whole landscape of Kakrafoon's Rudlit Desert was turned upside down like a big pancake, then hit by the solar flares from the star nearest it when Hotblack's stuntship hit it. These flares caused the desert land to turn into a great, beautiful fertile landscape. Hotblack's agent would later call it "a good gig", although the event may or may not have had anything to do with the large Improbability Field passing through the area at the time.

The planet Krikkit is (at the beginning of the novel Life, the Universe and Everything) located in a dust cloud composed chiefly of the disintegrated remains of the enormous spaceborne computerHactar. Hactar was originally created by the Silastic Armourfiends of Striterax to design the Ultimate Weapon. Hactar produced a very, very small bomb that, when activated, would connect every star to every other star, cause them to all go supernova simultaneously and, thus, destroy the universe. The bomb proved dysfunctional because Hactar had designed it with a tiny flaw, reasoning that no consequence could be worse than that of setting the bomb off. The Silastic Armourfiends disagreed and destroyed Hactar.

Due to the dust cloud, the sky above Krikkit was completely black, and thus the people of Krikkit led insular lives and never realised the existence of the Universe. With the population thus prepared, Hactar, disintegrated but still functional, built and crashed a model spaceship onto Krikkit in order to introduce its inhabitants to the concept of the Universe. Secretly guided by Hactar, the Krikkiters built their first spaceship, Krikkit One, penetrated the dust cloud, and surveyed the Universe before them. Unbeknownst to the Krikkiters, Hactar had been subliminally conditioning their minds to the point where they could not accept a Universe into their world view with the intention of putting them into a similar mindset to that of the Silastic Armourfiends. Sooner or later, they would require an Ultimate Weapon, and this would allow Hactar to finally complete his purpose, something he had felt considerably guilty about not doing before. Upon first witnessing the glory and splendor of the Universe, they casually, whimsically, decided to destroy it, remarking, "It'll have to go." Aided again by the mind of Hactar, the Krikkiters built an incredible battlefleet and waged a massive war against the entire Universe. The Galaxy, then in an era of relative peace, was unprepared, and spent the next 2,000 years fighting the Krikkiters in war that resulted in about two "grillion" casualties.

When Krikkit was eventually defeated, Judiciary Pag sentenced Krikkit and its sun to be sealed in a Slo-Time envelope within which time would pass almost infinitely slowly until the end of the Universe, thus serving the dual purpose of protecting the Universe from Krikkit, and allowing the Krikkiters to enjoy a solitary existence in the twilight of Creation. Light would be deflected around the envelope, making it invisible and impenetrable. The Wikkit Gate, the key that would unlock the envelope, was disintegrated into time, and could therefore not be used to free the planet from the envelope ahead of time.

However, a Krikkit warship carrying deadly white robots of the kind used in the war escaped before the envelope was sealed, and, within a brief ten billion years, managed to reassemble the Wikkit Gate. The Gate was composed of the SteelPillar of Strength and Power (Marvin the Paranoid Android's artificial leg), the GoldenBail of Prosperity (The Heart of Gold, the small golden box that makes the Infinite Improbability Drive function), the Perspex Pillar of Science and Reason (The Argabuthon Scepter of Justice; "Plastic Pillar" in the American version), the Silver Bail of Peace (The Rory Award For The Most Gratuitous Use Of The Word "Fuck" In A Serious Screenplay/The Rory Award for the Most Gratuitous Use of the Word "Belgium" in a Serious Screenplay in the American version), and the Wooden Pillar of Nature and Spirituality (the reconstituted ashes of the stump signifying the death of English cricket: see The Ashes).

The robots unsealed the envelope, but Arthur, Slartibartfast, Trillian and Ford Prefect, with the unintentional help of Marvin, were able to disperse Hactar's particles, freeing the Krikkiters from his continued influence, and thus saving the Universe. Arthur then went to live on Krikkit for three years, before leaving for an unexplained reason.

Krikkit also managed to leave other marks besides the destruction of numerous worlds: due to racial memories, the Earth- sport of cricket and the pan-dimensional sport of Brockian Ultra-Cricket were based on the Krikkit Wars. Slartibartfast enjoys the game of cricket, but he notes that most sensible citizens of the galaxy find the sport to be in rather bad taste.

The Krikketers are described as humanoid aliens who are charming and polite, despite their cosmocidal tendencies. They are capable of composing incredibly moving and poetic music. Some of the younger Krikketers are interested in developing sporting links with the rest of the Universe rather than destroying it.

The "Krikkit Song" was composed and performed by Philip Pope for Fit the Fifteenth of the radio series, featured on An Informational Visit and Arthur Diverted, first broadcast on BBC Radio 4, 5 October 2004.

Lamuella is the idyllic planet on which Arthur Dent lives and works as The Sandwich Maker at the start of the novel Mostly Harmless. The planet is mostly made up of villages, though there is only one significant settlement on the planet. It intersects a plural zone, allowing for teleportation to the Domain of the King. The primary species of the planet are humanoids, Perfectly Normal Beasts – named thus by Old Thrashbarg – and Pikka Birds. The residents of Lamuella worship a deity by the name of Almighty Bob. Among the many things Arthur likes about Lamuella are the number of suns and moons (one of each), the number of hours in a day (25, giving him an extra hour in bed and a few minutes every day adjusting his watch, a task he greatly enjoys) and the number of days in a year (about 300, so the year doesn't drag on). The planet is mostly unknown, so few space travellers ever taste the superbly made sandwiches that would be the planet's claim to fame.

Magrathea is an ancient planet located in orbit around the twin suns
Soulianis and Rahm in the heart of the Horsehead Nebula. Magrathea is a planet whose economy was based on the manufacturing of other planets for the wealthiest people in the universe. It was the people of Magrathea, including Slartibartfast, who created the Earth.

“

Look at me – I design coastlines ... I got an award for Norway ... I've been doing fjords all my life ... for a fleeting moment they become fashionable and I get a major award.

Magrathea is considered the home of the industry of "Custom-made luxury planet-building." It was a market aimed at the richest of the rich, during the days of the former Galactic Empire. The Magratheans would design and create entire planets for wealthy clients. They were so successful that Magrathea became the richest planet of all time. However, this resulted in the rest of the galaxy being plunged into abject poverty and the economy collapsing. The planet then faded from memory with most people believing it to be just a myth.[9][10]

Amongst the clients who asked for planets to be created were a race of hyper-intelligent pan-dimensional beings who asked the Magratheans to create the Earth which, in addition to being a planet, was a super-computer designed to calculate the ultimate question to the ultimate answer to life, the universe, and everything. Amongst the people who worked on it was Slartibartfast, a coastal designer who won an award for his work on Norway's fjords.[11][12]

The surface of the planet appears to be dead, described as "blighted", with the Magratheans kept in cryogenic sleep within the planet, not to be awakened until the economy was again strong enough to afford luxury planets. The book says that, "Bits of it were dullish grey, bits of it dullish brown, the rest of it rather less interesting to look at. It was like a dried-out marsh, now barren of all vegetation and covered with a layer of dust about an inch thick. It was very cold."[13] They were later awakened for the reconstruction of the Earth (the Earth, Mk. II).

NowWhat is a planet in the Whole Sort of General Mish Mash formerly known as the Hitchhiker's Guide universe. NowWhat can be found in place of planet Earth at an unlikely position along the probability axis, in an alternative universe.

According to the novel Mostly Harmless, "the planet of NowWhat had been named after the opening words of the first settlers to arrive there after struggling across light-years of space to reach the furthest unexplored outreaches of the Galaxy. The main town was called OhWell."

The only export of NowWhat is the NowWhattian boghog skin, which no one in their right minds would want to buy because it's thin and very leaky, and the export trade only manages to survive because of the significant number of people in the Galaxy who are not in their right minds. In fact, one of the lingering questions on NowWhat is how the boghogs manage to stay warm in their skins. It says "if anyone had wanted to learn the language of the boghogs, they would have discovered that they don't and are just as cold and miserable as everyone else". It also mentions that no one wanted to, because the boghogs communicate by biting each other very hard on the thigh.

Travellers that arrive on NowWhat are greeted by a picture of the president smiling a ghastly smile; the picture was taken after he shot himself, and the missing corner of his face had been drawn in crayon. Everyone there pursues one ambition: to leave.

Arthur Dent arrives on NowWhat in search of Earth. After turning the map upside down and adjusting for different sea-levels, he discovers that the shapes of the continents of NowWhat resemble those of the planet Earth. For lack of any other similarity Arthur Dent concludes that it is the right planet but the wrong universe and leaves again.

Santraginus V is a planet known widely for its marble-sanded beaches. One of the suggested uses for a towel offered by the Guide is to lie on it as you relax on its beaches. Seawater from the oceans adjoining those beaches, which contain deliriously serene (or extremely oblivious) fish that apparently don't care where they're going, forms a key ingredient for the Pan Galactic Gargle Blaster. The drummer of rock band Disaster Area once stayed here while the rest of the band moved onto the next tour location (the planet Kakrafoon), and found a small pebble that he declared would be his friend.

Saquo-Pilia Hensha is the planet to which the headquarters of the Guide are moved after InfiniDim Enterprises bought it out. One of Saquo-Pilia Hensha's most renowned holidays is Assumption of St. Antwelm. Because King Antwelm assumed everybody wanted to be happy, enjoy themselves, and have the best possible time together, on his death he willed his entire personal fortune to financing an annual festival for this purpose. Events of this holiday include a feast, dancing and fatuous games such as Hunt the Wocket. Ford returned to the Guide headquarters in Mostly Harmless, but went rogue when the new management offered him the job of restaurant critic.

Traal is a planet whose jungle swamps are home to the infamous Ravenous Bugblatter Beast, and because of its inclusion in the Guide, an infamous court case about the literal interpretation of the entry came about because it said "Beasts often make a very good meal for visiting tourists" rather than "beasts often make a very good meal of visiting tourists". Luckily, protection from the Beast can be attained by wrapping a towel around one's eyes, because it is "so mind-boggling stupid it believes that if you can't see it, it can't see you". The planet has only one surviving oral hygienist. Traal is a location visited in the Hitchhiker's Guide to the Galaxy video game, where you must wrap a towel around your head to escape the beast.

Viltvodle VI is the home world of the small, blue, fifty-armed Jatravartids, who live in perpetual fear of what they refer to as "The Coming of the Great White Handkerchief". This is their cosmology's version of the end of the Universe, and can be explained by the fact that they believe that the Universe was sneezed out of the nose of a being called the Great Green Arkleseizure.

The Jatravartids are also unique because they were the first people in the Universe who invented the aerosol deodorant before the wheel. In the 2005 movie The Hitchhiker's Guide to the Galaxy, they seem to not have invented the wheel at all, as a square-wheeledbicycle can be seen in the foreground.

Other Galactic religions have sent missionaries to Viltvodle VI to attempt to convert the Jatravartids to whichever religion the specific missionary in question happens to be a follower of. The most notable of these missionaries is Humma Kavula (although in the 2005 movie The Hitchhiker's Guide to the Galaxy, he seems to be preaching the Jatravartids' religion).

This is the homeworld of the Vogons. In the books it is said to be long-abandoned, although in the 2005 movie The Hitchhiker's Guide to the Galaxy it still seems to be an active administrative center. According to the 2005 film, anyone standing on Vogsphere must be careful not to think, because the planet is infested with shovel-like creatures which leap up out of the ground and smack anyone who does so in the face. These creatures, parasites which prey on free thought and punish original ideas, were conceived by Adams and apparently represent the physical embodiment of bureaucracy. It may be that the existence of such creatures on the Vogons' homeworld is the reason for their pathological hatred of independent thought, as survival on Vogsphere would entail avoiding such thinking. It is also home to scintillating jewel-encrusted crabs, which the Vogons smash with hammers, and beautiful silky-coated gazelle-like creatures, on which the Vogons sit, invariably fatally.

In the 2005 movie The Hitchhiker's Guide to the Galaxy, the exterior shots of Vogsphere were filmed at Trefil Quarry, a few miles north of Tredegar in south Wales.

The Domain of the King is a bar and grillrestaurant located in a desert on an unspecified planet. This planet is apparently the true home of the Perfectly Normal Beasts that migrate across the Anhondo Plain of Lamuella twice yearly; for reasons and by means unexplained, the portion of the Beasts' migratory path on this planet which would intersect with The Domain of the King is diverted to Lamuella. Elvis Presley, who appears to have not been abducted by aliens but gone to them himself, spends time there, hence the name.

A far-from-harmless city on an unspecified planet, where warring police tribes lay ambushes for one another, bass players get machine-gunned for playing the wrong riff too many times, and call-girls with degrees in sociology tell wealthy record-company executives that it's actually okay for them to be rich. The Old Pink Dog Bar is a far-from-harmless bar in Han Dold City where Ford Prefect discovers that Earth was not as demolished as he previously believed at the beginning of the novel So Long, and Thanks for All the Fish. It was also here that Ford almost lost his breathing privileges after attempting to pay an extensive bar-tab with an American Express card, before as a last resort he offered a write-up in the Hitchhiker's Guide.

The University of Maximegalon (often simply called Maximegalon) is a very august institution of higher learning that has produced many marvellous discoveries in a myriad of fields scientific and otherwise. Its faculty is composed of many of the finest minds in the Galaxy, and includes the rock band Disaster Area's chief accountant (he is the Professor of Neomathematics). The university also published the Ultra-Complete Maximegalon Dictionary of Every Language Ever. Only one copy of the Dictionary was ever printed, and requires a fleet of trucks to haul it around. Due to the Dictionary's immense size, the University is trying to sell it and regain some valuable parking lots.

The university includes the Maximegalon Institute of Slowly and Painfully Working Out the Surprisingly Obvious (MISPWOSO), site of the famous Herring Sandwich experiments, where a robot was tricked into an infinite loop whereby it attempted eternally to eat a herring sandwich by picking it up, dropping it, picking it up again, et cetera. From this, the institute both correctly concluded that any intelligence with a function of logic can be deceived by an intelligence with a function of logic of equal or greater power, and incorrectly concluded that the driving force behind all change and evolution in life is herring sandwiches, a theory which was later recanted.

Among the other attractions present on or near the campus is the Museum of Diseased Imaginings, where the bathtub in which the Golgafrinchan B-Ark captain spends his time does not reside, despite apparently being well qualified.

Maximegalon also holds The Milliard Gargantu-Brain. Although one of the greatest computers in the Universe and able to count all the atoms in a star in a millisecond, it is just an abacus in comparison to Deep Thought, the second greatest computer in the Universe.[12]

"Ladies and gentlemen", he said, "the Universe as we know it has now been in existence for over one hundred and seventy thousand million billion years and will be ending in a little over half an hour. So, welcome one and all to Milliways, the Restaurant at the End of the Universe!"

Milliways, also known as The Restaurant at the End of the Universe, can only be visited practically by time travel, as it exists at the end of time and matter. Marvin the Paranoid Android is one character who manages to reach Milliways without the use of time travel, merely by being very patient. One of the restaurant's major attractions is that diners can watch the entire universe end in a Gnab Gib[16] from the windows of the restaurant as they eat. The terminal moment is followed by dessert. Reservations are easily obtained, since they can be booked once the patron returns to his or her original time after their meal, and the restaurant's bill can be paid by depositing a penny in any bank account of the present time: by the end of the universe, the compound interest on that penny over the course of time after 170 quintillion years (short scale) will be enough to pay the extremely high bill. Near-instant transportation to the restaurant can be achieved in certain rarefied circumstances, such as being next to an exploding hyperspatial field generator on the planet where Milliways will eventually be built several billion years after the explosion occurs.

Because of the special number of impossibilities surrounding all aspects of Milliways, their advertising-firm penned the following slogan: "If you've done six impossible things this morning, why not round it off with breakfast at Milliways – the Restaurant at the End of the Universe!" Believing "six impossible things before breakfast" is a quote from the White Queen in Lewis Carroll's Through the Looking-Glass.

A cocktail party – of a rather more airborne, long-lasting and aggressive nature than usual – hovering above an unnamed planet and with drunken revellers from all corners of the universe. These included up to the fourth-generation descendants of the original invited guests, visiting beings including Thor the Thunder God, Trillian and the playwright who had won a Rory award (in fact the Silver Bail), and – when they arrived on their mission to save all of creation from the Krikkit Robots – Arthur Dent, Ford Prefect and Slartibartfast. The unnamed world is described as having been ravaged by the party (cheese- and wine-raids, etc.) and so reduced to abject poverty; eventually, after the Krikkit Robots have been, it is strongly suggested that the party crashed into it. From Life, the Universe and Everything.

In the novel Life, the Universe and Everything, Agrajag tells Arthur Dent that he was killed again in an assassin's failed attempt to kill Arthur at Stavromula Beta. However, Agrajag discovered that Arthur had not yet been there. Despite the time-paradox that would be created, Agrajag decided to kill Arthur anyway. When Agrajag's assassination attempt failed, Arthur decided that "logically, he could not die until he had been to Stavromula Beta".[17] By the end of Mostly Harmless, many of the major characters found themselves in a club in London called Beta, so named for being the second club that Stavro Mueller owned (Mueller's first club was Alpha in New York City). An attempt is made on Arthur's life, but he ducked, and the bullet hit a human incarnation of Agrajag. Arthur realized that Agrajag meant this club, not a planet, and that he could now be killed. Then the Vogons, with the help of their new Guide and the Grebulons, finally destroy all parallel versions of Earth.

In The Restaurant at the End of the Universe, Ford says he has heard of a planet in the seventh dimension that got used as a ball in a game of intergalactic bar billiards in the second novel. Tragically, the act of potting this planet into a black hole and killing ten billion people scored only thirty points. In Life, the Universe and Everything, the Guide describes the inhabitants of the higher dimensions as "a pretty nasty heathen lot" that should be wiped out if only we could "work out a way of firing missiles at right-angles to reality." A favoured pastime in the higher dimensions is Brockian Ultra-Cricket, a team sport that involves people beating each other with sporting equipment, then apologising from a safe distance. Like real cricket, the rules of the game are massively convoluted, leading to a perpetual state of war between the players over their interpretation. Brockian Ultra Cricket was named after an old friend of Douglas Adams, Jonny Brock.[18]

According to the Hitchhiker's Guide to the Galaxy, the Universe has an infinite area (as far as anyone can make out), no imports whatsoever (because the Universe has no outside from which to import anything), exports (ditto), art (because "the function of art is to hold a mirror up to nature, and there simply isn't a mirror big enough"), or population (because its population, by definition, must be finite, and the number of planets is infinite, as there is infinite space to put them in; not all planets are inhabited, and any finite number divided by infinity is zero, or as near to it as makes no odds), or sex ("well, there is an awful lot of this, largely because of the total lack of money, trade, banks, art or anything else that might keep the non-existent people of the universe occupied"). From The Restaurant at the End of the Universe.

The Whole Sort of General Mish Mash (WSOGMM) is mentioned in Mostly Harmless. The Guide describes the WSOGMM as a way of understanding the sum of parallel universes in creation (in this context, creation is best described to a casual observer as space–time). The theory of WSOGMM states that parallel universes are not parallel as such but rather each universe is simply a quantum physical perception of the same construct, which is the WSOGMM.

The last version of the Guide gives a description of the Mish Mash to Arthur Dent's daughter Random. The guide explains that individuals in her universe move freely in the first three dimensions, which they know as space, travel in a straight line in a fourth (Time) and are rooted to one place in a fifth, which is described as the first fundamental of probability.

The fifth dimension (and, it is implied, every other dimension up to the twenty-second) is actually an axis of probability that makes up the Mish Mash. Any multiverse in creation is actually a location in the fifth dimension. To an observer, a certain universe functions alone, but it's proven that if something is introduced simultaneously into every dimension (such as the bird version of The Guide was as a marketing ploy), an action on that object can affect the entire Mish Mash. In the final chapter of the novel Mostly Harmless, when Earth is destroyed by the Vogons and the bird dies with it, the Earth is destroyed in all other universes – finally removed from the WSOGMM.